Possible Use for iPad Mini

Now that users can actually get their hands on the iPad Mini, they are finding creative ways to integrate the device in their daily lives.  This video below is one example.  I'm sure there are more such as putting the iPad Mini on your refrigerator using the magnetic smart cover (try at your own risk).  Anyway, I think the car installation is a cool idea.  I like how the iPad Mini just slides into place.  Then you have all the apps and features at your fingertips.  Plus, you could use Siri so that you can keep your eyes on the road and drive safely.  All while having the full sound of you car stereo system.  I'm not sure what your plan B would be if you forgot your iPad Mini at home or work.  Can the iPhone or another iOS device connect into the system as well?  Those are the questions I have.  What do you think about this setup?  Would you consider it?  Why or why not?  Also, please let me know if you have any creative ideas for Apple's iPad Mini.